CN101351376A - Electric power steering device - Google Patents
Electric power steering device Download PDFInfo
- Publication number
- CN101351376A CN101351376A CNA2006800495703A CN200680049570A CN101351376A CN 101351376 A CN101351376 A CN 101351376A CN A2006800495703 A CNA2006800495703 A CN A2006800495703A CN 200680049570 A CN200680049570 A CN 200680049570A CN 101351376 A CN101351376 A CN 101351376A
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- torque
- detection means
- input shaft
- electrically powered
- column jecket
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Abstract
The front end, relative to a vehicle, of a lower column tube (2) is bent and fixed by bolts (18) to an end on the rear end, relative to the vehicle, of a gear housing (13). Between the lower column tube (2) and an input shaft (4) is a seal member (20). The seal member (20) is press fitted and fixed to a predetermined position on the bore at a front section, relative to the vehicle, of the lower column tube (2). The lower column tube (2) is positioned by being fastened and fixed to the gear housing (13), and the seal member (20) is fixed between an input shaft (4) and the lower column tube (2). Components forming a torque detection structure placed in the gear housing (13) are arranged in the radial direction.
Description
Technical field
The present invention relates to a kind of electrically powered steering apparatus using same, wherein use torque sensor to detect to be applied to and turn to torque (steering torque) on the input shaft, and be delivered to output shaft in response to the detected assist torque that turns to that turns to torque and produced by electrical motor through speed reduction gearing, the present invention relates to the electrically powered steering apparatus using same that is designed to compact in size especially.
Background technology
In automobile steering system, use external power supply to provide the so-called power steering system of power steering to be widely used.Traditionally, blade hydraulic pump is used as the propulsion source of power steering gear, and in many cases Hydraulic Pump by engine drive.But, in having the lilliput car of small displacement engine, be difficult to use this power steering gear, because Hydraulic Pump is driven incessantly in such power steering gear.Even it be used in have than the situation in the automobile of large-duty engine under, the deterioration of can not ignore of fuel efficiency also can't be avoided.
As the solution of these problems, use electrical motor to obtain in recent years paying close attention to as the electrically powered steering apparatus using same of propulsion source.The advantage of electrically powered steering apparatus using same is, because it uses the propulsion source of on-vehicle battery as electrical motor, so in driving engine, do not have direct driving power loss, and because electrical motor only just activated when power steering is provided, so can suppress the deterioration of fuel efficiency, and can carry out electron steering easily.
In the power assistance mechanism of electrically powered steering apparatus using same, the torque that turns to that is applied on the input shaft is detected by torque sensor, and is passed to output shaft in response to the detected assist torque that turns to that turns to torque and produce like this through Poewr transmission mechanism by electrical motor.
In being equipped with the electrically powered steering apparatus using same of use worm gearing as the speed reduction gearing of Poewr transmission mechanism, with the axle drive shaft worm screw that links and the worm gear engagement that fixedly is assemblied on the output shaft of electrical motor, described output shaft is connected with the pinion and rack of steering hardware.
In this electrically powered steering apparatus using same, use and be connected the input shaft on the steering handwheel and be connected torsion bar that the output shaft on the pinion and rack of steering hardware is connected and detect and turn to torque.In other words, an end of torsion bar and input shaft link, and the other end and output shaft link.Because torsion bar reverses according to the size that turns to torque that is applied on the steering handwheel, so turn to torque accurately to be detected by determining windup-degree.If turn to torque accurately to be detected, the then exportable suitable assist torque that turns to.
As this torque master that turns to, knownly a kind ofly so for example open disclosed device in the flat 9-101212 communique the spy, the impedance that wherein is located at the coil in the housing is designed to according to turning to the windup-degree of the torsion bar that torque reverses to change by applying, and turns to torque to calculate based on the variation of impedance.
In the power assistance mechanism of electrically powered steering apparatus using same, be included in its vehicle rear-side end attaching have steering handwheel on steering shaft and with the following steering shaft of its spline fitted among interior steering shaft, following steering shaft is as input shaft, and output shaft is connected to the pinion and rack of steering hardware at its vehicle front side.Therefore, the whole length of steering shaft need be designed to have predetermined length according to vehicle.
Impact when on the other hand, electrically powered steering apparatus using same generally is equipped with energy absorption mechanism with the absorption vehicle collision.Chaufeur and steering handwheel collision when at vehicle collision and when secondary collision takes place, energy absorption mechanism allows steering handwheel to move to vehicle front by the entire length that shortens electrically powered steering apparatus using same, energy absorbing member is out of shape, ftractureing and/or fractureing consumes collision energy by making simultaneously, thereby alleviates the impact that acts on when secondary collision on the chaufeur.Because the various structures of energy absorption mechanism are known as conventional art, so will omit its detailed description.
In order to shorten the entire length of electrically powered steering apparatus using same when energy absorption mechanism is worked, steering shaft and column jecket (tubing string) generally are divided into last spindle unit and the lower shaft section that cooperates slidably each other respectively and are gone up column jecket and following column jecket.In this structure, can absorb a certain amount of impact energy in order to make energy absorption mechanism, need set in advance and can keep supplying spindle unit and last column jecket and do not have the space of interfering ground slip certain-length (it is known as the crumple stroke).In order to limit the terminal of crumple stroke, electrically powered steering apparatus using same has retainer.
On the other hand, the vehicle front side end of column jecket is connected with the vehicle rear-side end of power assistance mechanism housing.For increasing the Joint strenght of column jecket and housing, need keep Joint strenght to be higher than predeterminated level by for example the Design of length of connecting portion being grown.
Aforementioned spy opens flat 9-101212 communique (particularly special Fig. 1 that opens flat 9-101212 communique) and has instructed the input shaft side in power assistance mechanism between power assistance mechanism housing and input shaft oil sealing to be set.In this structure, because oil sealing is arranged between the torque sensor mechanism and column jecket that is located in the housing, if the steering shaft that the position of the crumple stroke terminal retainer that is made of housing is provided as on the oil sealed vehicle rear-side provides enough crumple strokes, the entire length that then comprises the described structure of steering shaft becomes big, and this causes the degree of freedom of vehicle design to reduce.
Herein, with reference to Fig. 6 traditional tubing string booster type electric steering hardware is described.
In tubing string booster type electric steering hardware shown in Figure 6, the following column jecket 2 and the last column jecket 1 that constitute column jecket cooperate slidably.Slidably axle 3 and solid input shaft 4 can be rotated to support on column jecket 1,2 inside on the hollow of spline fitted.
The cardinal extremity of torsion bar 6 is fixed on the vehicle front side end of input shaft 4 by force fit.Torsion bar 6 extends in the output shaft 5 with hollow structure, and its end is fixed on the end of output shaft 5.
Torque detection means TS is arranged on the vehicle rear-side of output shaft 5.Particularly, the groove 7 that is used for the torque detection is arranged on the vehicle rear-side portion of output shaft 5, and sleeve pipe 8 is arranged on the radial outside of groove 7.The vehicle front side end that plastic deformation is fixed on input shaft 4 takes place by for example ca(u)lk/riveted joint (caulking) in the vehicle rear-side end of sleeve pipe 8.Coil 9 is arranged on the radial outside of sleeve pipe 8.In addition, circuit card etc. is arranged on the vehicle rear-side of sleeve pipe 8.
By chaufeur the torque that turns to that the operation of steering handwheel (not shown) produces is delivered to not shown dirigible wheel by the steering hardware (not shown) that comprises input shaft 4, torsion bar 6, output shaft 5, universal-joint UJ, tween drive shaft (not shown) and pinion and rack.The rotational force of electrical motor 10 is suitable for being delivered to output shaft 5 through worm screw 11 and worm gear 12.Like this, the suitable assist torque that turns to can be by suitably the rotational force and the hand of rotation at control motor 10 are applied on the output shaft 5.
In conventional apparatus shown in Figure 6, sealing element 20 is arranged in the gear hub 13 between the vehicle front side of the vehicle rear-side of coil 9 and input shaft 4.In addition, the vehicle front side end of following column jecket 2 is engaged in from the outside on the tubular rearward end of gear hub 13 at the vehicle rear-side end of gear hub 13, and the retainer of crumple stroke is arranged on the vehicle rear-side end face of gear hub 13.
The spy open the 2000-190857 communique instructed on the periphery of the sleeve pipe of torque master sealing arrangement is set in case sleeve pipe and and the column jecket parts that link of housing between sealing is provided.
The spy open the 2003-306156 communique instructed be located at housing above near the tubular extensional shell and steering shaft between press setting device in being provided with, press in this setting device by housing the pressure differential effect between inside and outside move or be out of shape interior pressure with the adjustment enclosure interior.But, the unexposed sealing arrangement of the document.
In the open disclosed device of No.WO2005/049406A1 in the world, being covered with dust with the annular of the outer peripheral face moving contact of lower shaft (input shaft) large-diameter portion is arranged on down on the inner peripheral surface of column jecket.But, be difficult to make the entire length of steering hardware to shorten, be kept away from down the crumple stroke path of column jecket when being arranged in the generation secondary collision because need to be covered with dust.
Summary of the invention
In view of the foregoing make the present invention, and its purpose is to provide a kind of electrically powered steering apparatus using same, can make shortly comprising the integrally-built length of the electrically powered steering apparatus using same of steering shaft, the required crumple stroke of impact when keep absorbing secondary collision simultaneously, thus the degree of freedom of vehicle design can be increased.
For achieving the above object, according to electrically powered steering apparatus using same of the present invention--the torque that turns to that wherein is applied on the input shaft is detected by torque sensor, and turn to torque and be delivered to output shaft through speed reduction gearing by the assist torque that turns to that electrical motor produces in response to detected--be characterised in that, between the inner radial of column jecket and described input shaft, be provided with sealing element.
Preferably, described sealing element is arranged between described column jecket and the described torque sensor.
In addition, according to electrically powered steering apparatus using same of the present invention--the torque that turns to that wherein is applied on the input shaft is detected by torque sensor, and be delivered to output shaft through speed reduction gearing in response to the detected assist torque that turns to that turns to torque and produce by electrical motor--be characterised in that, between described input shaft and described torque sensor, be provided with sealing element.
According to the present invention, by sealing element being arranged on column jecket inside, can make the integrally-built length of the electrically powered steering apparatus using same that comprises steering shaft make shortly, the required crumple stroke of impact when keep absorbing secondary collision simultaneously, thus can increase the degree of freedom of vehicle design.In addition, when the integrally-built design length of electrically powered steering apparatus using same fixedly the time, the crumple stroke can design than longer in traditional electrically powered steering apparatus using same.
Description of drawings
Fig. 1 is the longitudinal section according to the electrically powered steering apparatus using same of first embodiment of the invention.
Fig. 2 is the amplification view of the main portion of electrically powered steering apparatus using same shown in Figure 1.
Fig. 3 is the amplification view according to the main portion of the electrically powered steering apparatus using same of the modification of first embodiment of the invention.
Fig. 4 is the amplification view according to the main portion of the electrically powered steering apparatus using same of second embodiment of the invention.
Fig. 5 is the amplification view according to the main portion of the electrically powered steering apparatus using same of third embodiment of the invention.
Fig. 6 is the longitudinal section according to the electrically powered steering apparatus using same of prior art.
The specific embodiment
Below, with reference to accompanying drawing the electrically powered steering apparatus using same according to the embodiment of the invention is described.
(first embodiment)
Fig. 1 is the longitudinal section according to the electrically powered steering apparatus using same of first embodiment of the invention.
Fig. 2 is the amplification view of the main portion of electrically powered steering apparatus using same shown in Figure 1.In the electrically powered steering apparatus using same according to this embodiment, steering-column tube is made of last column jecket 1 and following column jecket 2, and the vehicle front side end of going up column jecket 1 slidably from external mounting on the vehicle rear-side end of descending column jecket, as shown in Figure 1.
Last column jecket 1 utilizes known bracket institution BR to be installed on the vehicle body.Bracket institution BR is made of vehicle side support 102 on the strength member 100 that is fixed on vehicle body and the tubing string side stand 104 that is arranged on regularly on the column jecket 1.Tubing string side stand 104 makes vehicle side support 102 can regulate the inclination and the telescopic location of steering handwheel (not shown) by known regulating mechanism (not shown).
Diaphragm (capsule) 106 that vehicle side support 102 breaks away from when being used at secondary collision is fixed on the strength member 100 of vehicle body by screw 108.Known energy absorption mechanism (not shown) is arranged between column jecket and the vehicle body, so as the diaphragm 106 that is used to break away from during at secondary collision damaged and on column jecket 1 when vehicle front moves, absorb impact energy.
Steering shaft can be rotated to support in the column jecket 1,2.Steering shaft is made of spindle unit 3 and solid lower shaft section 4 on the hollow that steering handwheel is arranged in its vehicle rear-side end attaching, they are by the 3a of female splines portion in the vehicle front side portion that is arranged on spindle unit 3 and be arranged on the 4a of male splines portion spline fitted slidably on the vehicle rear-side end of lower shaft section 4, simultaneously can transmitting torque.
Power assistance mechanism P is arranged on down the vehicle front side of column jecket 2.The housing of power assistance mechanism P is made of gear hub on the vehicle rear-side 13 and the lid 14 that is fixedly connected on the gear hub 13 at vehicle front side.
Shown in concrete among Fig. 2, the vehicle rear-side of gear hub 13 extends axially the 13a of portion and holds torque sensor TS described later, and as described below, and the vehicle rear-side end of gear hub 13 supports down the vehicle front side end of column jecket 2 regularly.In this embodiment, particularly, are the integrally formed thick flange part 13b that radially extend at the vehicle rear-side end of gear hub 13.The integrally formed flange part 2a that extends radially outward utilizes bolt 18 to be fastened on the vehicle rear-side end face of thick flange part 13b by bending at the vehicle front side end that descends column jecket 2.The retainer of the crumple stroke terminal when in this embodiment, flange part 2a is as the qualification secondary collision on the column jecket.
Speed reduction gearing is contained in the space that is formed by the lid on gear hub and the vehicle front side 14.
The vehicle front side portion of lower shaft section 4 extends to the inside of gear hub 13 and is used as the input shaft of power assistance mechanism P.(lower shaft 4 will be known as input shaft hereinafter.)
On the other hand, antifriction-bearing box 15 and 16 is separately positioned on roughly axially on the interior week of the interior week at middle part and lid 14 of housing 13.The output shaft 5 of power assistance mechanism P is by described a pair of antifriction-bearing box 15,16 and input shaft 4 coaxial supportings.The vehicle rear-side end of output shaft 5 extends to the portion that the extends axially 13a inside of gear hub 13, and extend to basically rear vehicle end flange part 13b inside and in the face of the vehicle front side end face of input shaft 4.
The cardinal extremity of torsion bar 6 is by force fit and being fixed on the hole enlargement end 4c that is located at its vehicle front side end of input shaft 4.Torsion bar 6 is output shaft 5 inner extensions the with hollow structure, and the end of torsion bar 6 is fixed on the end of output shaft 5 by set pin 5a.The vehicle front side end of output shaft 5 links through the universal-joint (not shown) the tween drive shaft (not shown).The vehicle front side end of output shaft 5 is connected on the dirigible wheel through universal-joint (not shown), tween drive shaft (not shown) and pinion and rack (not shown) etc.
Torque detection means TS is arranged in the inner radial space of the 13a of the portion that extends axially of gear hub 13, and this inner radial space extends to thick flange part 13b on the vehicle rear-side of bearing 15.Torque detection means TS is by following component set-up: be used for a plurality of grooves 7 that torque detects on the periphery that is disposed on output shaft 5 on the vehicle rear-side of antifriction-bearing box 15 with rule; Be arranged on the sleeve pipe 8 that detects with the radial outside of groove 7; The torque that is arranged on the radial outside of sleeve pipe 8 detects with coil 9; With described coil bonded assembly torque detection circuit card 9a; With provide and exterior wire harness that is electrically connected etc.
In this embodiment, the vehicle rear-side end of sleeve pipe 8 on the periphery of the hole enlargement end of input shaft 4 4c, and utilizes the plastic deformation that produces by for example ca(u)lk to be fixed on the described periphery from external mounting.Sleeve pipe 8 has and torque detection radially relative microscler (oblong) window 8a of groove 7.Torque detects the radial outside that is arranged on the elongated window 8a of sleeve pipe 8 with coil 9 in gear hub 13.
In this embodiment, torque detects the radial outside that is installed in coil 9 with circuit card 9a, and in gear hub 13 basically radially with it and put.In this embodiment, except that torque detects with the circuit card 9a, for example for element required in torque detection means and that be arranged on wire harness in the gear hub and so on be arranged to radially overlapping with coil 9, thereby the 13a of the portion that extends axially of gear hub is shortened.
The position of worm gear 12 between antifriction-bearing box 15 and antifriction-bearing box 16 is assemblied on the output shaft 5.The inner radial of worm gear 12 is fixed on the shoulder 5b that is located at output shaft 5 by nut 17 upward makes bearing 16 between them, thereby worm gear 12 is fixed on the output shaft 5.
The tooth of worm gear 12 meshes with the worm screw 11 of the axle drive shaft that is attached to power-assisted usefulness electrical motor (not shown).Described electrical motor is fixedly mounted on the gear hub 13 as is well known.
By chaufeur the unshowned steering hardware of torque through comprising input shaft 4, torsion bar 6, output shaft 5, universal-joint UJ (not shown), tween drive shaft (not shown) and pinion and rack etc. that turn to that the operation of steering handwheel (not shown) produces is delivered to unshowned dirigible wheel.The rotational force of electrical motor (not shown) is suitable for being delivered to output shaft 5 through worm screw 11 and worm gear 12, and the rotational force by control motor (not shown) suitably and hand of rotation can give output shaft 5 suitable turn to assist torque.
In this embodiment, sealing element 20 the position of being located at the following vehicle rear-side of the flange part 2a of the vehicle front side end of column jecket 2 by force fit and be fixed on the inner peripheral surface of column jecket 2 down and the outer peripheral face of the wide diameter portion of input shaft 4 between.
Following column jecket 2 is fixedly secured on gear hub 13, thereby its position determines that and sealing element 20 is fixed between input shaft 4 and the following column jecket 2.Sealing element 20 can and directly not be fixed on down on the column jecket 2 by gear hub 13 maintenances, as long as its is arranged on the radially inner side of column jecket 2 down on the vehicle rear-side of the flange part of following column jecket 2.
According to this embodiment, by sealing element 20 is arranged on down in the column jecket 2, the column jecket side of crumple stroke when the flange part 2a of following column jecket 2 can be used as secondary collision, promptly it can be used as retainer.In addition, because the sufficient Joint strenght that obtains down column jecket 2 and housing that is connected of flange part 2a that can be by following column jecket 2 and the thick flange part 13b of gear hub, so can make the integrally-built length of the electrically powered steering apparatus using same that comprises steering shaft makes shortly, the required crumple stroke of impact when keep absorbing secondary collision simultaneously etc., thus the degree of freedom of vehicle design can be increased.In addition, if the integrally-built design length of electrically powered steering apparatus using same is fixed, then the crumple stroke can design than longer in traditional electrically powered steering apparatus using same.
According to this embodiment, by becoming the radially overlapping axial length of housing that makes shorter arrangements of elements on the vehicle rear-side that is located at gear hub of torque detection means, and go up the length of the crumple stroke that column jecket moves when secondary collision can be correspondingly longer.
Fig. 3 is the amplification view according to the main portion of the electrically powered steering apparatus using same of the modification of first embodiment of the invention.
In the torque detection means TS according to this modification, torque detects to detect with circuit card 9a and to be used for torque with coil 9, torque and detects on the iron plate 19 that wire harness 9b with circuit is installed in radially extension and formation torque sensor unit.It is relative with sleeve pipe 8 that coil 9 and torque on being located at output shaft detect with groove 7, and other element such as torque detect with circuit card 9a and be used for that the torque detection is arranged on the radial outside of coil 9 with the wire harness 9b of circuit and at gear hub 13 basically radially with it and put.According to this structure of this embodiment, being arranged in the space (is idle space at traditional mechanism) that torque detects with the radial outside of coil and can being used effectively in the gear hub.In addition, because in this structure, all elements of torque detection means all are provided with in the axial direction the short zone, also can make shortly in the axial direction so hold their gear hub, and can make the crumple stroke correspondingly become big.
In addition, in assembling process, the support 21 of torque detection means TS and the radially extending flange 22 of following column jecket 2 are compressed against on the radially extension end face of gear hub 13, and they are fixed simultaneously by fixed-use bolt 18.
Other structure, operation and advantage are identical with above-mentioned first embodiment.
(second embodiment)
Fig. 4 is the amplification view according to the main portion of the electrically powered steering apparatus using same of second embodiment of the invention.
In the above-mentioned modification of first embodiment, the flange part 2a of following column jecket 2 makes one by welding and following column jecket 2.For the vehicle rear-side end face that makes gear hub seamlessly contacts each other with the end face of the flange part 2a of following column jecket 2, they are necessary with high-precision processing, and this causes cost to increase.Given this, in a second embodiment, be provided with sealing element 30 between column jecket 2 and the torque detection means TS down, the sealing element 20 among sealing parts 30 and above-mentioned first embodiment has the sealing function that is equal to, and also can provide sealing between column jecket 2 and the torque detection means TS down.
Particularly, sealing element 30 by the sealing 30a between radially inner side that is located at down column jecket 2 and the input shaft 4 and be located at down column jecket 2 and torque detection means TS between sealing 30b one constitute.
In the end of following column jecket 2 sealing element 30 is set as described above, when column jecket 2 is assembled instantly, the sealing 30a of sealing element 30 is compressed between torque detection means TS and following column jecket 2, thus the location that can improve sealing property and realize sealing 30b simultaneously.
In assembling process, sealing element 30 at first is press fit into down on the vehicle front side end of column jecket 2, the flange 22 that is arranged on down the vehicle front of column jecket 2 is compressed against on the end face of gear hub 13, and sealing element 30 is fixed on the end face of gear hub 13 by bolt of rear end plate 18 simultaneously with following column jecket 2.
Being arranged on sealing 30b between torque detection means TS and the following column jecket 2 can be arranged on torque detection means TS and go up and be not integral with sealing 30a.In other words, by in conjunction with the sealing element that uses the function that is designed to have sealing 30b according to the sealing element 20 of first embodiment, can realize the advantageous effects that is equal to second embodiment.
Other structure, operation and advantage are identical with above-mentioned first embodiment.
(the 3rd embodiment)
Fig. 5 is the amplification view according to the main portion of the electrically powered steering apparatus using same of third embodiment of the invention.
Though sealing element is arranged on the input shaft in first and second embodiment, sealing element 40 is arranged on the periphery of sleeve pipe 8 in this embodiment.
Because sealing element 40 provides sealing between the peripheral part of torque sensor unit and sleeve pipe 8, so even have the gap between column jecket 2 and the torque sensor unit down, exotic also can not enter the inside of torque detection means TS.
Other structure, operation and advantage are identical with above-mentioned first embodiment.
The invention is not restricted to the foregoing description, but can make various modifications it.
Claims (10)
1. electrically powered steering apparatus using same, the torque that turns to that wherein is applied on the input shaft is detected by torque detection means, and be delivered to output shaft through speed reduction gearing in response to the detected assist torque that turns to that turns to torque and produce by electrical motor, it is characterized in that, between the inner radial of column jecket and described input shaft, be provided with sealing element.
2. electrically powered steering apparatus using same as claimed in claim 1 is characterized in that, radially extension is arranged on the vehicle front side end of described column jecket regularly, and is fixed on by anchor fitting on the vehicle rear-side end of gear hub.
3. electrically powered steering apparatus using same as claimed in claim 2 is characterized in that, it is crooked that described radially extension is integral ground from described column jecket.
4. electrically powered steering apparatus using same as claimed in claim 2 is characterized in that, described radially extension is welded on the described column jecket.
5. as each described electrically powered steering apparatus using same in the claim 1 to 4, it is characterized in that, between described column jecket and described torque detection means, be provided with sealing element.
6. electrically powered steering apparatus using same, the torque that turns to that wherein is applied on the input shaft is detected by torque detection means, and is delivered to output shaft in response to the detected assist torque that turns to that turns to torque and produced by electrical motor through speed reduction gearing, it is characterized in that,
The sleeve pipe that is used for described torque detection means is from external mounting and be fixed on described input shaft,
Among the element of described torque detection means, coil, torque testing circuit plate and to be used for the wire harness combination of torque testing circuit in aggregates at least, and
Sleeve pipe and described being combined between the holistic torque sensor unit at described torque detection means are provided with sealing element.
7. electrically powered steering apparatus using same comprises:
Input has the input shaft of steering effort;
Output shaft through torsion bar and the binding of described input shaft;
Housing, the rotatably mounted described output shaft of this housing is also coaxial with described input shaft;
Torque detection means, this torque detection means are arranged near described output shaft in the described housing, are applied to the torque that turns on the described input shaft with detection; And
Speed reduction gearing, this speed reduction gearing are contained in the described housing, with will be in response to being delivered to described output shaft by the detected speed that turns to torque and drive to reduce of described torque detection means by the rotation that electrical motor produces,
It is characterized in that,
Described housing supports the radial flange portions of described column jecket regularly in the position of the radial outside of described torque detection means by the part of holding described torque detection means, thereby described flange part is used for the retainer of crumple stroke when being formed in secondary collision, and
Between described input shaft and the described part of holding described torque detection means in the footpath of described column jecket inwardly the position of the radially inner side in week be provided with and be used to seal the described sealing element that holds the part of described torque detection means.
8. electrically powered steering apparatus using same as claimed in claim 7 is characterized in that, described torque detection means comprises:
Torque detects uses groove, and it extends vertically and is arranged in described output shaft and the described input shaft on the outer peripheral face of any one;
Sleeve pipe, it is arranged on another person in described output shaft and the described input shaft regularly, has with described torque to detect the window that is associated with groove, and around described output shaft;
Torque detects and uses coil, and it is arranged to radially relative with described sleeve pipe in described housing; With
Be used to form the parts of torque testing circuit, its radial outside at described coil is arranged in the described housing and radially with described coil and put.
9. electrically powered steering apparatus using same as claimed in claim 8 is characterized in that, described coil and describedly be used to form the unit construction of torque testing circuit at the plate that radially extends.
10. as each described electrically powered steering apparatus using same in the claim 7 to 9, it is characterized in that described sealing element is arranged on the vehicle rear-side of flange part of described column jecket.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005379180 | 2005-12-28 | ||
| JP379180/2005 | 2005-12-28 | ||
| JP021098/2006 | 2006-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101351376A true CN101351376A (en) | 2009-01-21 |
Family
ID=40269670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800495703A Pending CN101351376A (en) | 2005-12-28 | 2006-12-15 | Electric power steering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101351376A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957169A (en) * | 2009-07-15 | 2011-01-26 | 万都株式会社 | Torque angle sensor and electronic power steering apparatus having the same |
| CN102745228A (en) * | 2012-08-04 | 2012-10-24 | 浙江金峰汽车零部件制造有限公司 | Input shaft of electric power steering column |
| CN102762433A (en) * | 2011-02-02 | 2012-10-31 | 日本精工株式会社 | Column unit for electric power steering device |
| CN110733558A (en) * | 2018-07-19 | 2020-01-31 | 日立汽车系统株式会社 | Steering device |
-
2006
- 2006-12-15 CN CNA2006800495703A patent/CN101351376A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957169A (en) * | 2009-07-15 | 2011-01-26 | 万都株式会社 | Torque angle sensor and electronic power steering apparatus having the same |
| CN101957169B (en) * | 2009-07-15 | 2012-11-14 | 万都株式会社 | Torque angle sensor and electronic power steering apparatus having the same |
| CN102762433A (en) * | 2011-02-02 | 2012-10-31 | 日本精工株式会社 | Column unit for electric power steering device |
| CN102762433B (en) * | 2011-02-02 | 2015-10-21 | 日本精工株式会社 | Electric type power steering device pole unit |
| CN102745228A (en) * | 2012-08-04 | 2012-10-24 | 浙江金峰汽车零部件制造有限公司 | Input shaft of electric power steering column |
| CN110733558A (en) * | 2018-07-19 | 2020-01-31 | 日立汽车系统株式会社 | Steering device |
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Open date: 20090121 |